Poly Brush: Brush or Spray

Cubcrafters sprays but the Polyfiber manual brushes: ‘that’s why its called Poly Brush.’ On the first plane it was sprayed and it worked just fine. I like to make test panels to experiment with colors, spray gun settings and the like. As an experiment a coat of Poly Brush was applied using a foam brush. To my surprise it dried smooth with no brush strokes and even color. Admittedly it was a
thin coat, but it got me thinking.

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At the factory time is money so spraying obviously saves a lot of time and money. But a lot of Poly Brush that could go on the plane ends up as over spray and gets sucked out of the paint booth. So why not brush on the first coat or two and then perhaps do a final coat with the spray gun? That would get more of each gallon on the plane and, perhaps, fill the fabric pores a bit better.

Has anyone had success brushing on the Poly Brush?